Study of Medium Energy Heavy Ion Reactions with Quantum Mechanical Simulations

中能重离子反应的量子力学模拟研究

• 批准号: 05640343
• 负责人: HORIUCHI Hisashi
• 金额: $ 1.22万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05640343/
• 关键词: AMD; Flow; Multistep process; DELTA prticle; Projectile fragment; EOS; クラスターのフロー; 前平衡過程; バランス・エネルギー; 中高エネルギー重イオン核反応; 微視的シミュレーション

1. Study of momentum distribution of projectile fragments : By incorporating nucleon-cluster collision process, we could reproduce momentum distribution of projectile fragments in the Fermi energy region which looks like obeying the projectile-spectator model.2. Study of flow of nucleons and fragments : Flow of uncleons and fragments in ^<12>C+^<12>C and ^<40>Ar+^<27>Al was studied by the use of the Gogny force which is soft and the SKG2 force which is stiff. The former reproduces data well while the latter does not. The calculated results depend only weakly on the in-medium NN cross sections. Theory reproduced the observed tendency that larger fragments have larger flow. The coalescence mechanism is more important in ^<40>Ar+^<27>Al than in ^<12>C+^<12>C.3. Study of proton inelastic scattering at medium energies : Double differential cross sections of inelastically scattered protons at medium energies in p+^<12>C and p+^<58>Ni were reproduced well with AMD.4. Inclusion of DELTA degrees of freedom into the AMD theory : AMD computer code including DELTA degrees of freedom was constructed. p+^<12>C inelastic scattering at 800 MeV was studied successfully with the new code.

1。弹丸碎片的动量分布的研究：通过结合核子群集碰撞过程，我们可以再现费米能量区域中弹丸碎片的动量分布，这看起来像是遵守弹丸 - 光谱模型。2。核子和片段流的研究：通过使用柔软的gogny力和僵硬的skg2力来研究 ^<12> c+ ^<12> c和 ^<40> ar+ ^<27> al中的叔叔和片段的流动。前者可以很好地重现数据，而后者却没有。计算的结果仅弱取决于NN内部横截面。理论再现了观察到的趋势，即较大的碎片具有较大的流量。在 ^<40> ar+ ^27> al中，合并机制比 ^<12> c+ ^<12> c.3更重要。质子非弹性散射在中能：在p+^<12> C和p+^<58> Ni中，在中等能的中散射质子的双差分横截面可与AMD.4一起重现。将三角洲的自由度包括在AMD理论中：建立了包括三角洲自由度的AMD计算机代码。使用新代码成功研究了800 MEV处的P+^<12> c非弹性散射。

项目成果

A.Wierling: "Antisymmetrization of a Mean Field Calculation of the T-matrix" Zeitschrift fiir Physik A. 348. 153-168 (1994)

A.Wierling：“T 矩阵平均场计算的反对称”Zeitschrift fiir Physik A. 348. 153-168 (1994)

A.Ono: "Flow of Nucleons and Fragments in ^<40>Ar+^<27>Al Collisions" Physical Review C. 51. 299-309 (1995)

A.Ono：“^<40>Ar ^<27>Al 碰撞中的核子和碎片流”物理评论 C. 51. 299-309 (1995)

H.Horiuchi: "Neutron-Rich Nuclei Studied with AMD" Zeitschrift fiir Physik A. 349. 279-283 (1994)

H.Horiuchi：“用 AMD 研究富中子核”Zeitschrift fiir Physik A. 349. 279-283 (1994)

A.Ono: "Momentam Distribution of Fragments in Heavy Ion Reactions;Dependence on the Stochastic Collision Process" Physical Review C. 47. 2652-2660 (1993)

A.Ono：“重离子反应中碎片的动量分布；对随机碰撞过程的依赖性”物理评论 C. 47. 2652-2660 (1993)

A.Ono: "Nucleon Flow and Fragment Flow in Heavy Ion Reactions" Physical Review C. 48. 2946-2955 (1993)

A.Ono：“重离子反应中的核子流和碎片流”物理评论 C.48.2946-2955 (1993)